10 Questions
What is a characteristic common to all living organisms?
Ability to carry out movement
What type of movement involves the capture of prey?
Locomotion
What is a characteristic of motile organisms?
Ability to actively move from one place to another
What is an example of a motile organism?
Cheetah
What is a function of the cheetah's long tail?
Balance
What is a characteristic of sessile organisms?
Fixed to one place
What is an example of a sessile organism?
Venus flytrap
How do sessile organisms obtain food and resources?
By relying on the environment to bring food to them
What triggers a response in the Venus flytrap?
Touching a hair on the surface
What happens after the Venus flytrap's trap closes?
The insect is digested
Study Notes
Movement in Living Organisms
- Movement is a universal feature of living organisms and one of the key processes of life.
Types of Movement
- Internal movement: movement of materials within a cytoplasm, such as ventilation in the lungs.
- Locomotion: movement from one location to another, allowing organisms to capture prey, obtain abiotic resources, and more.
Motile Organisms
- Motile organisms have the ability to actively move from one place to another.
- Examples: animals, such as mammals, birds, and insects.
- Functions of locomotion: avoiding danger, finding a mate, migrating, foraging for food.
- Means of locomotion: skeletal muscles, wings, flagella (whip-like structures in bacteria).
Sessile Organisms
- Sessile organisms are fixed to one place once they have established a location.
- They rely on the environment to bring food and other resources to them.
- Examples: plants, some animals, such as sea anemones.
- Movement in response to external stimuli: growth of a plant stem towards light.
Examples of Motile and Sessile Organisms
- Cheetah: fastest animal on land, can run up to 120 km per hour, adapted backbone and long tail for smooth locomotion.
- Venus flytrap: carnivorous plant, feeds on insects, traps close in response to touching hairs on its surface, digests insects with enzymes.
Explore the importance of movement in living organisms, including internal and locomotion types, and its role in various functions such as avoiding danger and finding a mate.
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